OAKLAND -- Comedian Katt Williams was released from custody Thursday morning, several hours after being arrested in connection with a fight the previous night, when a man said he was hit on the head with a bottle in downtown Oakland, police said.

Williams, in town for a Friday night appearance at the Oracle Arena, was never booked into jail and was released about 11 a.m. after police questioned him and other witnesses. Police believe the fight was a possibly a case of "mutual combat" and there may be discrepancies in the account given by the man who was injured.

The 18-year-old Berkeley man told police he was hit in the head with a bottle and taken to a hospital after the fight, which happened about 8 p.m. in a tour vehicle parked at the Courtyard Marriott, 988 Broadway, police said.

Police were first called about a man bleeding from the head in the 900 block of Broadway. The man told police what had happened and police went looking for Williams. He was not in the vehicle but officers found him about a half-hour later near a nightclub in the 200 block of Washington Street. Police said he was cooperative when he was taken into custody.

Police were trying to determine the relationship between the man and Williams. The man who said he was hit with the bottle was not immediately named. Police said they were initially told the man was with some other people who may have been invited to the tour vehicle before the confrontation happened.

Williams' agent could not immediately be reached for comment.

Williams, 41, a comedian, actor and rapper, was sued earlier this month by an assistant who maintains he hit her in October and caused permanent injuries. The comic was recently involved in shoving match during a Nov. 1 standup performance in Denver, Colo., when he jumped offstage to confront a heckler.

Williams, whose real name is Micah S. Katt Williams, is known for his roles in the movies "Friday After Next" and "Norbit."

In June 2011, Los Angeles Sheriff's Office deputies arrested him on charges of false imprisonment for an incident involving a man on a tractor in Palmdale, CBS reported.